Tabulator for typewriters



Se t, 9, 1924.

r 1,508,160 T. E. BUSCHMANN 'mauLA'roR FOR TYPEWRI'IERS Filed March 23.1921 s Shah-Shut 1 IIZJJQZMOL Sept. 9 1924. 1,508,160

T. .E. BUSCHMANN TABULATOR FOR TYPEWRITERS Filed March 23 1921 3Shuts-Shut 2 Sept. 9, 1924. 1,508,160

T. E. BUSCHMANN TABQLATOR FOR TYPEWRITERS Filed March 23 192) 3Shank-Shoot 5 mun IHIIH IILZJQZZZZJOJQ.

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Talented Sept. 9, 1924.

UNHTE STATES arass s Ar mn'nonon EUGEN BUSGHMANN, or onnirnrrz-iterrnn,GERMANY, ASSIGNOR To WANDERER-WERKE VORM. wmxnnorna a aanmoxnnxrrnnonsnrnsonarr,

OF SCHONAU, CI-IEIVINITZ, GERMANY.

TABULATOR- FOR TYPEWRITERS.

Application filed March 23, 1921. SerialNo. 4'54,947.- I

(GRANTED UNDER. THE PROVISIONS-0F THE ACT OFMARGH 3, 1921,41 STAT. L,1313.) l

T 0 all whom it may concern:

Be it known that I, Trrnonon EUGEN Boson- .MANN, a citizen of the Realmof Germany, and residing at'Haydnstrasse 9, Chemnitz- Kappel, Germany,have invented certain new and useful Improvements in Tabulators forTypewriters (for which Ilhave filed application in Germany July 15,1915, Patent No. 291,446, dated Apr. 19, 1916), of which the followingis a specification.

This invention consists in an improvement on the tabulating device forwhich a patent was applied for on March 23rd, 1921, Serial No. 454,946.

A constructural form of the improved tabulating device is illustrated byway of example in the accompanying drawings in which Figure 1 is a sideelevation showing the denominational selecting mechanism and the sectionselecting mechanism in the inoperative position.

Figure 2 is a side elevation showing the denominational selectingmechanism and the section selecting mechanism in their de pressedpositions.

Figure 3 is a plan of the section selecting mechanism.

The reference numerals for indicating the parts shown in theaccompanying drawings, are the same as those employed to indicate thecorresponding parts of the apparatus specified in my aforesaid earlierapplication.

The platen 2 is carried by the so-called paper carriage 3 which runs bymeans of wheels on the rail 4 that is fixed to the typewriter frame 1.

The denominational key levers 6 mounted on the axle 9 are providedwithlever arms that extend rearwardly and terminate .in a bend 6. Thisbend serves first iforactuating the universal bar for releasing the feedmechanism, and second as a limiting stop for the lever arms 12 which arelikewise mounted on the axle 9, and are connected by a spring 13 to thedenominational key levers 6 Pins 14 provided-on the ends of the leverarms 12 engage in slots in the denominational stops .15 which areslidably guided in a casing '16. This casing is adapted to rock in theusual manner around the axle 17, and "is guided at the top by :a

plate which is not shown as it is a subsidiary feature. The rocking.motion of the casing 16 serves to allow the denominational stops 15 toco-operate with-various rows of column stops. The rocking mechanism isomitted in the drawings because the ;apparatus is intended to be usedalso in. cases where there is only one tabulator bar, and

consequently the denominational stop casing is fixed to the machineframe.

The denominational stops 15 are raised bythe denominational key levers6*, spring 18 lever 12 and pin 14, so that they come Within range of thecolumn stops or sliders 19 which can be inserted in slots 20 as requiredfor the of the form. I On depressing a denominational key, the papercarriage is disconnected in the usual manner from the feed mechanism.The throwing out of gear of thefeed mechanism purpose of writing columnsis efiected by the rod 60 which is jointed-'- by means of a pin 59 to abar 57 fulcrumed at 56. The universal bar 58 extends over all thedenominational keylevers 6 which are provided with the band 6 at thepoint of engagement. Springs 18 attached to the denominational stops 15,as also springs '10 mounted on the denominational key levers 6.whichzare suspended from a hooked bar tional key must be struck eachtime until the desired column is reached.

According to my priorapplication'above referred to, the entire-traveloftheicarria-ge is subdivided into a number of-travel columns. Aselecting apparatus determines the column which is to be traversedfreely before the denominational stops can come into operation. A bar21corresponding to V the column stop bars 20 serves to receive thesliders for the selection ofxtjhe travelncolumns, and incontradistinction to the arrangement shown in the specification of myearlier application above referred to, is situated in direct vicinity ofthe paper carriage. In the movements of the paper carriage, the sliders22 carry along with them the teeth 23 of the selecting wheel 23. The

selecting wheel 23 is fixed on an axle 29 which is mounted in a bracket1 on a part of the machine frame. On the aXle 29 there is situated adisc 25 with indentations (Figure 3) corresponding in number to thenumber of the teeth of the selecting wheel. A roller 26 (Figures 1 and2) mounted on a lever assures the proper position of the selecting wheel23. This mechanism is not shown more fully for the reason that it isknown. The selecting wheel 23 rotates the toothed wheel 30 which isfixed on the axle 29 and which actuates the rack 31 that is formed witha step in the same manner as the one shown in the specification of myearlier application.

For selecting the column selecting keys are provided which arepreferably arranged under the denominational keys, but might just aswell be arranged laterally or at any other suitable location. The rearends 7 of the column selecting key levers are connected by means of pins52 to vertical rods 35. The vertical rods 35 are formed at their upperpart with a step 35 and at the top with riveted guide pieces or bearingblocks 36 that serve for the mounting of locking bolts 37 formed withpointed ends. The blocks 36 are situated directly side by side; theytherefore support one another and they are guided in common in a fork38. On the axle 39 moiuited in the machine frame, there are providedbell crank levers 40 which bear with their lower horizontal arms uponthe pins 15 provided on the denominational stops 15. Also a universalbar 41 is mounted rotatably on the axle 39 by means of two lever arms.Further, on the same axle there is provided a locking frame 42 that ispulled by a spring 43 against the stop 44.

The operation of the apparatus is as follows On depressing a columnselecting key the rod 35 is raised, and the pointed end of therespective bolt 37 is thereby raised between the rack 31 and theuniversal bar 41 (Fig-- ure 2). The bridge bar 41 is forced by the bolt37 to the left away from the rack 31 so as to bear against the uprightarms of the bell crank levers 40 and cause the lower horizontal arms ofthe said levers to press downwardly upon the pins 15*, thereby preventmgany upward movement of the denominational stops 15. When the rod 35 israised the step 35 comes into latching engagement with the locking frame42 and the rod 35 is thereby prevented from returning to its lowerposltion when the pressure on the column selecting key is removed. If adenominational key be now depressed, the respective denominational stop15 cannot be raised so as to come within the range of the column stopsor sliders 19, because its pin 15 is held down by the horizontal arm ofthe bell crank lever 40 which in turn is locked by the universal bar 41and the bolt 37 This position is shown in Fig. 2. The spring 13 however,allows the denominational key to be depressed, the spring beingtensioned because the lever 12 is unable to follow the movement of thedenominational. key lever 6 Depression of the denominational key causesthe bend 6 of the denominational key lever 6 to raise the universal bar58 and release the paper carriage. As soon as the paper carriage hasbeen released, the sliders 22 rotate the selecting wheel 23 therebysliding the rack 31, each slider 22 in turn moving the rack 31 through adistance equal to the width of one of the blocks 36 which are riveted tothe rods 35 and carry the locking bolts 37. When the step 31 of the rack31 comes opposite to the raised looking bolt 37 it allows the lockingbolt to move to the right. The spring 13 being in tension, it tends torock the lever 12 in a clock wise direction about the pivot 9 so thatwhen the locking bolt 37 is free to move to the right the denominationalstop 15 will be raised and, through the intermediary of the pin 15 andbell crank lever 40, will move the universal bar 41 to the right. Aswill be seen from Figs. 1 and 2, only a very limited movement of the rod35 about its pivot 52 will cause the step 35 to become disengaged fromthe frame 42. As soon as the step 35 moves out of engagement with theframe 42 the locking bolt 37 drops whereby the universal bar 41 willmove back to the position shown in Fig. 1 and release the bell cranklevers 40 so that the denominational stops 15 can now come within therange of the column stops 19. The denominational stop which has comeinto operative position will then arrest the next following column stopand consequently the paper carriage.

In the hereinbefore described arrange ment only such columns can be keptfree which must still be traversed, because the selecting key operatesonly when the step of the rack has not yet been reached.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a typewriting machine, a carriage,denominational selecting mechanism including denominational stops,controlling means for preventing the denominational stops from cominginto action whilst the carriage moves through a predetermined distanceincluding members for latching the denomnational stops, column selectingmeans for setting the controlling means including a plurality of columnselecting keys, a plurality of locking bolts actuable by the columnselecting keys and operatively coacting with the latching members forholding the denominational stops against movement, re-.

siliently controlled means for automatically latching the said boltsupon the raising of one of the bolts, and means actuable byt-he carriagefor effecting the release of the locking bolts and thereby thedenominational stops at the moment When the carriage has reached the endof the said distance substantially as and for the purposes set forth.

2. In a typewriting machine, a carriage, denominational selectingmechanism including denominational stops, denominational keys foractuating said sto s, controlling means for preventing the enominationalstops from coming into action Whilst the carriage moves through apredetermined distance including a pivotally mounted unistops againstmovement, retaining means ineluding a resiliently controlled andpivotally mounted latching frame for automati cally latching. the boltsupon the raising of one of the bolts and means for releasing thedenominational stopsat the moment When the carriage has reached the endof the said distance comprising a stepped rack, substantially as and forthe purpose set forth.

In testimony whereof I have signed my name to this specification. ITHEODOR EUGEN BUSCHMANN.

Witnesses:

OSCAR KoLMANN, GE RG GABLER.

